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| Titel |
First eddy covariance flux measurements by PTR-TOF |
| VerfasserIn |
M. Müller, M. Graus, T. M. Ruuskanen, R. Schnitzhofer, I. Bamberger, L. Kaser, T. Titzmann, L. Hörtnagl, G. Wohlfahrt, T. Karl, A. Hansel |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 3, no. 2 ; Nr. 3, no. 2 (2010-03-25), S.387-395 |
| Datensatznummer |
250000971
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| Publikation (Nr.) |
 copernicus.org/amt-3-387-2010.pdf |
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| Zusammenfassung |
| The recently developed PTR-TOF instrument was evaluated to measure methanol
fluxes emitted from grass land using the eddy covariance method. The high
time resolution of the PTR-TOF allowed storing full mass spectra up to
m/z 315 with a frequency of 10 Hz. Three isobaric ions were found at a nominal
mass of m/z 33 due to the high mass resolving power of the PTR-TOF. Only one
of the three peaks contributed to eddy covariance fluxes. The exact mass of
this peak agrees well with the exact mass of protonated methanol
(m/z 33.0335). The eddy covariance methanol fluxes measured with PTR-TOF were
compared to virtual disjunct eddy covariance methanol fluxes simultaneously
measured with a conventional PTR-MS. The methanol fluxes from both
instruments show excellent agreement. |
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